// Thud - a dynamic object-oriented language
// Copyright (C) 2009,2010 David H. Hovemeyer <david.hovemeyer@gmail.com>

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// 
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
// 
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

/*
 * Reader.h
 *
 *  Created on: Dec 11, 2009
 *      Author: dhovemey
 */

#ifndef READER_H_
#define READER_H_

#include <cwchar>
#include <cstddef>
class InputStream;

class Reader {
private:
	Reader(const Reader &);
	Reader& operator=(const Reader &);

public:
	Reader();
	virtual ~Reader();

	virtual long readChar() = 0;

	// Subclasses may override this method for better performance.
	// The default implementation calls read() in a loop
	// to fill the buffer with as many characters as possible.
	virtual size_t read(wchar_t *buf, size_t n);
};

#endif /* READER_H_ */
